Question

Assertion: Distance between position of bright and dark fringe remain same in YDSE
Reason: fringe width $\beta=\frac{\lambda D}{d}$

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (A)

Distance between consecutive fringe is independent of its number.